Machines



eend' sans @anni eine.

GEORGE W. PRENTIQE, oF WHITINsVILLn'.MASSACHUSETTS.

Letters Patent N 96,835, dated November 16, 1869.

IMPROVEMENT IN MECHANISM FOR RAISING TOP-ROLLER WEIG-I-ITS IN SPINNING- MACHINES.

The Schedule reIen'ed to in these Letters Patent and maknr' part of the same.

Y To all whom it may concern.-

Be it known that I, GEORGE W. PnEN'rrcE, of Whitiusville, in the county of \Vorcester, State of Massachusetts, have invented certain new and useful Improvements in Mechanism for Raising 'lop- Roll \Veights, 85e., of Spinning and Drawing-Frames, and for similar purposes; and I do hereby declare the following' to be a full, clear, and exact description of the san1e,reierence being had to the accompanying drawings, in which- Figure 1 shows a side view of my invent-ion, and

Figure 2 is a plan of its arrangement, with the levers and weights.

lhe same letters denote the same parts in both.

AA are the rods depending from the saddles, and passing through the levers B B, on -whichtare hung the weights C C, in the usual way.

D is a slide, bolted to the fra-lne H by its flange E,

" and supporting the standard F, which is adjust-able ou it by the screw g, the standard F having` a slot in which is pivoted the ca.mlev,er H, and in which the bridge I plays, and another one at right angles to the first, in which the arms or lugs of `tb`e bridge play, and by which it is guided.

The bridge I is made to move freely in the stand ard, and be kept in place horizontally by itsarms yi li, and has notches to receive the levers B B. f

The lever H has a cam or arm, so formed andarranged that by lifting it to tbe position shown at H','it

`will raise the weights, by means of the bridg I and levers B B, sufficiently to relieve the rods A A and allow the rolls to be removed, and its form is such that. its point passes a little over beyond a perpendic-l 4ular line drawn through its pivot, and thus supports the bridge and retains it in position, until it is pressed down again, and when down, as at H, itleaves the weights and levers free to operate as usual.

The slide D allows the position of the standard F to be changed, so that it can be placed where it will operate best, and also permits the iiauge E to be bolted to the frame K, between other pieces, which otherwise might be inthe way of the standard.

'It will be seen thatmy invention contains within itself a principle of support of its parts in position, without the aid ci' catches or other devices, and is, to

V that extent, self-operating.

\Vhat I claim as new, and desire to secure by Letters Patent, is-

l. In combination with the bridge I, or other equivalent device for holding the weight-levers B, the cam-lever H, arranged to raise the weights, and to support them oi' itself, when raised, by the position it then assumes, substantially as described.

2. In combination with the lever H, the bridge I and adjustable standard l, constructed and arranged substantially as described.

- G. XV. PREN TICE.

Witnesses:

O. M. MILES, F. G. THAYER. 

